Trim/Arc/A0/To/P0 — Trim Arc to a Point

What It Does

The Trim/Arc/A0/To/P0 operator trims an arc starting from a specified point P0 that lies on the arc. The CW/CCW selector specifies which direction to trim — the arc is shortened from the selected direction.

Syntax

Trim/Arc, A0, To, P0, CW|CCW

Quick Input

A:   [arc reference]
P:   [point on the arc]
Dir: ○ CW  ● CCW

Direction Selector

Selector	Result
`CCW`	Trim the arc from P0 in the counter-clockwise direction
`CW`	Trim the arc from P0 in the clockwise direction

Worked Examples

Setup:
  A0 = Arc: centre(0,0), r=50, start=0, end=180 CCW
  P0 = (35.355, 35.355)  [at 45 degrees on A0]

Trim/Arc, A0, To, P0, CCW
→ A0 trimmed: start moved to P0
   New arc: from (35.355,35.355) to (0,50)
   Sweep: 45 degrees CCW

Trim/Arc, A0, To, P0, CW
→ A0 trimmed: end moved to P0
   New arc: from (50,0) to (35.355,35.355)
   Sweep: 45 degrees CCW

Analytic Rule

P0 must lie on arc A0 within its sweep angles.
CCW: trim from P0 toward the CCW direction (moves start endpoint)
CW:  trim from P0 toward the CW direction (moves end endpoint)

Result: Exact analytic arc trim.